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authorMark Rutland <mark.rutland@arm.com>2015-12-09 12:44:38 +0000
committerWill Deacon <will.deacon@arm.com>2015-12-10 17:36:08 +0000
commit9aa4ec1571da62366cfddc20f3b923609604fe63 (patch)
treed7986d4eb6e16aa235215a83b5a95544c3288884 /arch/arm64/mm/init.c
parent5b28cd9d084eca8ddc46270d2720305bfd40e348 (diff)
downloadop-kernel-dev-9aa4ec1571da62366cfddc20f3b923609604fe63.zip
op-kernel-dev-9aa4ec1571da62366cfddc20f3b923609604fe63.tar.gz
arm64: mm: fold alternatives into .init
Currently we treat the alternatives separately from other data that's only used during initialisation, using separate .altinstructions and .altinstr_replacement linker sections. These are freed for general allocation separately from .init*. This is problematic as: * We do not remove execute permissions, as we do for .init, leaving the memory executable. * We pad between them, making the kernel Image bianry up to PAGE_SIZE bytes larger than necessary. This patch moves the two sections into the contiguous region used for .init*. This saves some memory, ensures that we remove execute permissions, and allows us to remove some code made redundant by this reorganisation. Signed-off-by: Mark Rutland <mark.rutland@arm.com> Cc: Andre Przywara <andre.przywara@arm.com> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Jeremy Linton <jeremy.linton@arm.com> Cc: Laura Abbott <labbott@fedoraproject.org> Cc: Will Deacon <will.deacon@arm.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
Diffstat (limited to 'arch/arm64/mm/init.c')
-rw-r--r--arch/arm64/mm/init.c1
1 files changed, 0 insertions, 1 deletions
diff --git a/arch/arm64/mm/init.c b/arch/arm64/mm/init.c
index 9b8cc67..2ee6c20 100644
--- a/arch/arm64/mm/init.c
+++ b/arch/arm64/mm/init.c
@@ -360,7 +360,6 @@ void free_initmem(void)
{
fixup_init();
free_initmem_default(0);
- free_alternatives_memory();
}
#ifdef CONFIG_BLK_DEV_INITRD
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